1050405140 has 12 divisors (see below), whose sum is σ = 2205850836. Its totient is φ = 420162048.

The previous prime is 1050405127. The next prime is 1050405149. The reversal of 1050405140 is 415040501.

It can be written as a sum of positive squares in 2 ways, for example, as 738317584 + 312087556 = 27172^2 + 17666^2 .

It is a super-2 number, since 2×1050405140² = 2206701916276839200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 52520257 = 1050405140 / (1 + 0 + 5 + 0 + 4 + 0 + 5 + 1 + 4 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1050405149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26260109 + ... + 26260148.

It is an arithmetic number, because the mean of its divisors is an integer number (183820903).

Almost surely, 2^1050405140 is an apocalyptic number.

1050405140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1050405140 is an abundant number, since it is smaller than the sum of its proper divisors (1155445696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1050405140 is a wasteful number, since it uses less digits than its factorization.

1050405140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52520266 (or 52520264 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 1050405140 is about 32409.9543350496. The cubic root of 1050405140 is about 1016.5270647099.

Adding to 1050405140 its reverse (415040501), we get a palindrome (1465445641).

The spelling of 1050405140 in words is "one billion, fifty million, four hundred five thousand, one hundred forty".